Are drivers always required to use directional signals when passing another vehicle?

The requirement to use directional signals when passing another vehicle is contingent on various factors, including the specific traffic laws of the area and the context in which passing occurs. Generally, drivers are encouraged to use signals to communicate their intentions to other road users for safety and clarity. However, there are scenarios where using a signal may not be mandatory, such as in certain low-traffic situations or other controlled environments where it may be evident what a driver intends to do.

Traffic regulations often provide exceptions or stipulations based on the conditions of the road or the actions of other vehicles. For instance, in some jurisdictions, you might not be required to signal if there is a clear view of the lane or if it's clear that you are changing lanes without needing to make others aware of your action. This nuance in the law reflects the emphasis on practicality in driving etiquette, indicating that while signaling is a best practice, it's not an absolute requirement in every scenario.